Sucker-rod elevator



Sept. 30, 1924. 1,510,413

G. NORDLQH SUCKER ROD ELEVATOR Filed June 9, 1924 INVENTOR B few/yeAland/all.

A Tram/k y Patented Sept. 30, 1924.

GEORGE NORDLOH, 0F I-IAIVIIL'I0Nr KANSAS.

STICKER-ROD ELEVATOR.

Application filed June 9,

To all whom 2'25 may concern Be it. known that I. Gnonor. NoRnLo-H. acitizen of the United States. residing at amilton. in the county ofGreenwood and State of Kansas. have invented certain new and usefulImprovements in Sucker-Rod Elevators; and I do declare the following tohe a full, clear. and exact description oi the invention, such as willenable others skilled in the art to which it appertains to make and usethe same. reference being had to the accompanying drawings and to thefigures of reference marked thereon. which form a part of thisspecification.

This invention relates to a sucker rod elevator and the primary objectis to provide an easily applied etl'ective elevator to:- pull' ing thesucker rods of pumps.

Fig. 1 is a perspective view of a sucker rod elevator constructed inaccordance with my invention showing the position of the latch yoke forpermitting the sucker rod to he applied and detached.

Fig. 2 is a similar View functional position. and Fig. 3 is a plan viewof the sucker rod retaining part being shown in section.

The latch yoke is illustrated as comprising a shank 1 having an eye 2 atone end and an arch shaped portion 3 at the other. The arms 41- and 5 ofthe arch shaped portion 3 are provided with bearings 6 and 7 havingopenings 8 and 9 polygonal in cross section to receive the polygonalportions 10 and 11 on the trunnions 12 and 13, diametrically disposedfrom the jaw 14 which reoeives the sucker rod. The polygonal portion 10is adjacent to the edge oi the jaw The polygonal portion 11. is on theend of the trunnion l3. consequently it is spaced from the edge of thejaw 14. The

with the latch in bearing 6 is an expansion spring 18 tending to causethe polygonal portions 10 and 11 to seat in the polygonal openings 8 and9 of the bearings 6 and 7. The polygonal portions 10 and 11 however havetheir ends curved as at 19 and 20 so that they can cammed out of thehearings or into the hearings when the jaw 14 is turned.

The jaw 14 is provided with an elongated slot 21 which extends from ofthe jaw 14 into the center portion of he held 1924. Serial No. 718,855.

the jaw and at one edge of the slot 21 is a recess having a constrictedopenin 23 through which a detent hall 24 may extend, the opening 23having a diameter less than that of the hall. The outer portion of therece s provided with a threaded plug 25 between which and the hall is anexpansion spring 26 to urge the ball to the edge of the slot 21. The arm4 of the latch yoke is provided with a guard or latching finger 27 whichis directed inwardly with respect to the yoke so hat when the yoke is pepcndicular to the face of the jaw 14 the finger :27 will extend acrossthe slot and close it so that if the squared end 28 oi the sucker rod isin the slot, it cannot be removed so long as the latch finger 27 is inthe position shown in Fig. 2.

When the parts are in the position shown in Fig. 2. the polygonalportions of the trunnions will engage the polygonal portions of thehearings 6 and 7, therefore the jaw cannot be turned and the rod 29 willagainst longitudinal movement with respect to the jaw by the collars 30and 31 engaging opposite faces of the jaw 14.

f it desired to remove the sucker rod the jaw will be shifted laterallyagainst the spring 1 so that the polygonal porlions 10 and 11 will moveout of the bearby virtue of the cammed ends 19 and 20. the yoke may heturned at an angle to the perpendicular as indicated in Fig. 1.

the slot. detent to prevent the sucker rod from passing out o the slotaccidentally.

in applying the elevator to the sucker rod, the parts will assumesubstantially the position shown in Fig. 1 and of course the latchingposition will be that indicated in Fig. 2.

hat I claim tors-Patent is:

1. A sucker rod yoke having an eye at one end, portion at the other, theends of the arched portion having hearings with openings polygonal incross section, a jaw having a sucker rod receiving slot, trunnions 0nthe jaw. polygonal portions on the trunnions movahle into and out ofengagement with the polygonal openings in the hearings, a spring tornormally urging the polygonal portions into engagement with thepolygoand desire to secure by Letelevator comprising a nal open-in inthe bearings and a latch fin.- er n? by 1 nre e lng aci' e 'sioiin thejewg when thejfpke is in (5E po ition with respect to the jaw andmovable away from the slot when the yoke is in another position withrespect to the jaw.

2. A sucker rod elevator comprising a yoke having depending armsprovided with bearings having poly onal openings therethrongh, a suckerr 7 receiving jaw, trunniens on the 'j aw, one of the trunnions having apolygonal port-ion adjacent to the edge of the jaw and a threaded end, anut on the threaded end of the trunnion, a spring between the nut andone of the arms of the yoke, a polygonal portion on the outer end of theother trunnion end a guard member carried by one of the arms to normallyretain the suoirer rod engaged by the jaw.

A sueker rod elevator comprising a member having aligning arms providedwith aligning bearings, a S fiftable sucker rod engaging a jaw,trunnions on the jaw mounted in the bearings, the trunnions and hearingshaving CO-OPGIEltlX B parts whereby when the jaw is shifted in onedirection, it will be held against turning and when shifted in the otherdirection. it will be permitted to turn with respect to the first namedmember a spring normally urging the jaw in one position to preventturning thereof and means for retaining the sucker rod engaged by theiaw.

In testimony whereof I aiiix my signature.

GEORGE NORDLOH.

